Can



May 20, 1930. H, HEITLAGE 1,759,009

V 75L- INVENTOR.

3y MVM/7 fla..

A TTORNEYS lvvla'ly 20, 1930.

H. HEITLAGE CAN Filed Per?. 2, 1929 5 Sheets-Sheet' 2 l N VEN TOR.

BY h4/1L ATTORNEY' Mgy 20, 1930. l H HEITLAGE 1,759,009

CAN

Filed Feb. 2, 1929 3 Sheets-Sheet 3 INVEN TOR.

da/IL I 1 Il ATTORNEYJ:

Patented May 20, 1930 UNITED STATES PATENT OFFICE HENRY HEITLAGE, 0F ST. BERNARD, OHIO, ASSIGNOR TO THE IEROCTERIl GAMBLE COMPANY, OF CINCINNATI, OHIO, CORPORATION 0F OHIO CAN Application led February 2, 1929. Serial No. 337,070.

My invention relates to a novel modiiication of the type of can which has a weakened tearing strip adjacent ali end thereof which may be removed by a key which is secured to a projecting portion secured to the tearing strip7 and which, by rotation, Winds up the tearing strip in a coil, so that the end of the can becomes detached, thereby providing an opening for the can. f

j It is the object of my invention to provide a can which may be provided with a tearing strip in a single ply band at its upper end which, when torn away, will Crimp outwardly the edge of a treble fold of metal adjacent the lower edge of the tear strip and thus leave a smooth peripheral edge of suitable rigidity to retain a push lid which, with the removal of the tearing strip, is detached from the. body of the can. It is further my object to form the can body from an integral sheety of tin which is so folded that a threefold reinforcing band is provided below the top wall which lies adjacent the lower peripheral edge of the tearing strip. It is further my object to provide a multiple lap seam which will form a closure in which inner and outer plies of the metal are in other than simple overlappingT relation with an intermediate ply forming a butt oint, as I have found that such a construction presents difficulties from the point of view of forming and soldering the side joint. It is my object to form a joint in which the inner layer of metal is overlapped by at least three outer layers thereby forming a stronger joint than in a construction in which there are only two overlapping layers.

Another specific object of my invention is to provide a can having a tearing strip, the upper edge of which will lie adjacent a bead or double seam formed by the attachment of the can body and lid so that when the strip is removed there will be a smooth non-jagged edge formed on the lid.

The above and other objects towhich rcference will be made in the ensuing disclosure I accomplish b v that certain combination and arrangement of partsl of which I have shown a preferred embodiment.

Referring to the drawings:

Figure 1 shows a plan view of one type, a blank for my novel can body in which the lap seam is formed with threeoverlapping layers.

Figure 2 is a plan view of the blank shown in Figure 1 after the lap seam and reinforcing band have been folded over.

Figure 3 is a side elevation of the can formed from the blank shown in Figures l and 2 with a cut away portion showing the construction at the lap seam.

Figure 4: is a detail sectional view taken along the lines 4-1 .in Figure 3. i'

Figure 5 is a plan view of a different type of blank formed for making a lap seam joint formed with an inner overlapping joint with intermediate and outer layers butt jointed.

Figure 6 is a plan view of the blank shown in Figure 5 after the lap seam and reinforcing band have been folded over.

' Figure 7 is a side elevation of the can formed from the blanks shown in Figures 5 and 6 with a cut away portion showing the structure at the lap seam.

Figure 8 is a detail sectional View taken along the lines 8 8 in Figure 7.

Figure 9 is a plan view of a still further modified type of blank for forming a can with a lap seam consisting of inner and intermediate layers overlapping and the outer layer terminating at a butt joint.

Figure 1() is a plan vieu' of the blank shown in Figure 9 after folding over the locking strips and reinforcing band.

Figure 11 is a side elevation of a can formed from the blank shown in Figures 9 and 1U with cut away portions showing the structure at the lap seam.

Figure 12 is a detail sectional View taken along the lines 12-12 in Figure 11.

The body of the can is formed of a blank of metal such as tin having a top edge 1, bottom edge 2. and meeting edges 3 and 4, which for the greater portion of the can have a lock seam joint formed by bending over the edges 3 and LL along the lines 3, 4". A band of metal 5 at the top provides a crimping band for securing the lid of the can to the body. The lid (i is a usual construction having an annular depressed portion T within which a key may be attached in a suitable manner.

Below and immediately adjacent the crimping band 5, the tearing strip 8 is disposed. While I have shown a herringbone type of tearing strip, the tear strip may also be formed by a double score line.

The tearing strip has a tongue 9 which, when the can body is formed, provides means for attachment by the key which, in the usual construction, has a slot which engages the protruding tongue 9, and by the rotation of the key removes the tearing strip.

The metal of the can wall above and below the tear strip is notched out as indicated at l0 to facilitate the starting of the tear strip.

The metal of the can wall below the tearing strip is folded over to make a three ply reinforcingbead. In Figures l, 5 and 9, the area comprising the outer layer of the three ply fold is indicated by dotted lines 1f-az.. The intermediate layer is indicated by the lines b-b and the inner layer is indicated by the lines 0 0.

The portion 3 may be bent outwardly along the line 3 and the portion 4 may be bent inwardly along the line 4a to form hooks which provide the joint of the can wall. Solder may be applied to this lapped joint. At the juncture of the meeting edges of the rein` forcing band, unless the metal were cut away, the triple fold of the reinforcing band would form a six ply layer. In order to avoid a six ply layer which would be difficult to solder and at the same time avoiding a butt joint in the intermediate layer with overlapping joints on the inner and outer layer which makes a four ply layer with only two overlapping joints, I eut away the metal at the edges of the part of the can which is to be trebly folded, as illustrated in the several modifications.

In the modifications shown in Figures lto 4, the portion to form the reinforcing band has staggered extensions a1, b1 and c1 at one edge and staggered cut away portions a2, b2, c2 at the other edge so that when the can is lock seamed, there will be formed in the reinforcing band joint, an overla ping joint between the inner layers of the ffnld, lapped joints between the intermediate layers and at least three overlapping oints between the combined layers. It is also significant of this modification that the innermost end laps the next two ends which form a butt joint, the next two ends also form a second butt joint. The first butt joint and the second butt joint are offset to form an intermediate lap and the outermost layer laps the last butt joint to form a third lap.

In the modifications shown in Figures 5 8, there is only one extension C3 of the area 0-c. When the can is lock seamed, there will be formed in the reinforcing band an inner layer having a lapped joint and intermediate and outer layers having butt joints.

It is significant of this joint that the innermost end overlaps the next two ends which form a butt joint. This butt joint lies parallel to a butt joint formed between the meet ing ends of outer layers and the remaining end terminates at the junction point of the two previous butt joints.

In the modifications shown in Figures 9-11, the edges of the area a-a, b-f), and c-0 are extended in a` staggered arrangement at one side of the blank as indicated at a", b4, and 04, while at the other edge only the area e-c is cut away as indicated at c5. The joint formed by this modification consists of two lap joints and two butt joints. Also it is significant of this type of joint that the innermost end overlaps the next two ends which form a butt joint. The next two ends toward the outer side of the can abut and the latter ends overlap the first butt joint. The remaining end terminates at the junction of the ends which form the latter butt joint.

Thus at the joint in all these modifications, there is a. four ply layer with three laps and in each the inner layers form a lapped joint which forms a seat for the solder. Each modification has at least two butt joints which permit the ingress of solder so that there will be no tendency for the can to leak.

After cutting out the blank the portions 3 and 4 are first bent one inwardly and the other outwardly and then hooked together. '.lhe lateral edge joint formed accordingly is then pressed to form a lock seam. The edge portions of the three ply reinforcing band slip naturally into place during the formation of the lock seam. Solder is then applied to the lock seam and the overlapping upper lportions l2 and lower portions 13 of the can ody are also secured with this same solden ing operation. can are applied by crimping in the usual manner. A

The can made in accordance with the forcgoing description is usually economical in the amount of tin required. The operation of removing the tearing strip leaves smooth, non-jagged edges so that there is no likelihood of a woman cutting her hands either during the removal of the tearing strip or in the ilse of the can after the strip has been removed. The lid will further fit snugly in the opening formed after the lid has been removed. The operation of removing the tearing strip also completely releases the lid. This is considered an advantage as the lids of some cans of this type have a tendency to stick at the soldered joint, which prevents the ready removal thereof.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, i's:- 5

l. A blank for a can with a tearing strip, the removal of which releases the lid, com prising a blank from which the can body is formed, said blank having a band at one The lid and bottom of the l llO edge for crimping to retain the can lid, a band, one edge of -which lies immediately adjacent said crimping hand weakened to provide a tearin strip, and a baud, one edge of 5 which lies adjacent the opposite edge of said tearing strip forproviding a bent reinforcing band of three layers and the meeting edges of the portion for forming the reinforcing band shaped so as to form a four ply layer with three overlapping joints and at least two butt joints. l v

2. A can having abody portion with a band at one edge crimped to the can lid, a weak ened tearing strip lying adjacent said crimped band, and a portion adjacent said tearing strip folded in a triple layer, the portion foldedin a triple layer so disposed that the removal of the tearing strip will bend the torn'edge of the can body against the middle of said layers.

3. A can having a body with a tearing strip, and a portion adjacent saidftearing strip folded in a triple layer, the portion folded in a triple layer so disposed that the removal of the tearing strip will bend the torn edge of the can /body against the middle of said layers. l

et. A can having a body with a tearing strip, and a portion adjacent said tearing strip folded in a triple layer, said portion of the body having a lateral joint in which the four pl layers are soldered in triple overlapping re ation with at least two butt joints.

5. In a can of the character specified, a

lurality of layers forming a reinforcing hand, and a. tearing strip sodisposed with relation to said reinforcing band that the lower line of fracture of said tearing strip will be adjacent the inner` of said plurality of layers.

6. A can having a reinforcing band consisting of a plurality of layers of the can body, said can having a tearingstrip an /f edge of which lies adjacent the inner of said '45 plural layers.

7 In a can of the character specified, a plurality of layers forming a reinforcing band, and a tearing strip so disposed with relation to said reinforcing band that the lower line of fracture of said tearing strip will be adjacent the inner of said lurality of layers7 and said plural layers tregly overlapped at the lateral edge joint.

8. In a can of the character specified, a

plurality of layers forming a reinforcing band, and a tearing strip so disposed with relation to said reinforcing band that the lower line of fracture of said tearing strip will be adjacent the inner of said lurality of layers, and said plural layers tre l overlapped at the lateral edge joint and aving at least two butt joints.

HENRY HEITLAGE. 

